Israeli defense officials are bracing for the possibility of an Iranian revenge attack from Syria in the near future, in the form of rocket and missile launches at northern Israel.Officials believe Iran is determined to retaliate for the April 9 airstrike on Syria’s T4 airbase, which killed seven Iranian military advisers and members of the Iranian Revolutionary Guards. Iran blames Israel for this attack.>> Iran’s proxy wars: The four battlegrounds Iran uses to threaten Israel and the Middle East | Analysis: Despite Iran’s threats, Israeli army pushes aggressive line against Tehran in Syria >>Israel has detected unusual involvement by Hezbollah in Iran’s preparations for retaliation, even though the organization has been trying to keep its activity low-profile so as not to affect its position within Lebanon. Aside from Hezbollah commanders, operatives from the Shi’ite militias that Iran funds in Syria have also been active in the preparations.The operational planning, however, is being done by members of the Revolutionary Guards’ Quds force.